| 摘要 |
An improved method for reducing an amount of precoding feedback information in a multi-carrier Multiple-Input Multiple-Output (MIMO) communication system using precoding is disclosed. At the receiving end, the method jointly selects, while considering transmission quality for each relevant combination of sub-bands and matrices, a limited number of P codebook indices and a limited number of K' sub-bands to be included in a subset omega (m1, . . . , mK') of a set Omega of allowed sub-bands. K' is here set to a value K'<K and P is set to a value P<=K'. The P codebook indices and information identifying the subset omega is then conveyed to the transmitting end.
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